Specifications for Zeiss 4x12 Design Selection Monocular:
| Prism Design: | Schmidt-Pechan |
| Magnification: | 4x |
| Objective Lens Diameter: | 12 mm |
| Angle of View: | 10.3° |
| Field of View: | 540' at 1000 yd / 180 m @ 1000 m |
| Exit Pupil: | 3 mm |
| Eye Relief: | 15 mm |
| Diopter Correction: | ±4 |
| Minimum Focus Distance: | 18" / 45.7 cm |
| Length: | 2.4" / 6.1 cm |
| Weight: | 1.6 oz / 45 g |